Actually, I didn't like the movie until someone bought Hubby that book one Christmas and I, being bored, read it - and then I couldn't wait to see the movie. There was so many direction and production things that make it a ground-breaker in film technique that totally escaped me, and once I got into the movie from that angle, I came to love the plot, the music, etc... (Not so much Puzo's original book, though, go figger.)
mj
who has the website with the entire transcripts of all three movies bookmarked on both her home and work computers